#!/usr/bin/env bash
. "$GVM_ROOT/scripts/functions"

function show_usage() {
	echo "Usage: gvm listall [options]"
	echo "    -a, --all                 List all tags."
	echo "    -h, --help                Display this message."
}

function read_command_line() {
	tag_filter="release"
	for i in "$@"; do
		case $i in
			-a|--all)
				tag_filter=""
			;;
			-h|--help*)
				show_usage
				exit 0
			;;
			*)
				echo "Invalid option $i"
				show_usage
				exit 65 # Bad arguments
			;;
		esac
	done
}

read_command_line "$@"

echo
display_message "gvm gos (available)"
echo
versions=$(git ls-remote -t https://github.com/golang/go | awk -F/ '{ print $NF }' | $SORT_PATH)
if [[ $? -ne 0 ]]; then
	display_fatal "Failed to get version list from Google"
fi
for version in $versions; do
	if [[ "$tag_filter" == "release" ]]; then
		if [[ "${version:0:7}" == "release" ]]; then
			echo "   $version"
		elif [[ "${version:0:3}" == "go1" ]]; then
			echo "   $version"
		fi
	else
		echo "   $version"
	fi
done | sort -V
echo

